A wind and rain measuring station is set-up inside the campus of the University.The site is about 40 m square and located on a small piece of #at land. Towards itswest and north is the open space of the sports feld. Towards its south, it is also quite open with the land gently sloping downwards and with the general terrain slightly below the site. Towards its east, immediately it is quite open but further upstream there are groups of 12-storey high residential buildings. There are some trees in the northeasterly direction. A 20 m tall mast is installed at the center of the site. Five levels of anemometers are
mounted on the mast to monitor the speeds at different elevations. Wind direction sensors are also installed at three levels. The sensitive cup-tyre anemometer is used in the present study. Rain is also being monitored by a wind-driven rain tower which measures rainfall intensities of four vertical planes, i.e. facing north, east, south and west, as well as on a horizontal plane. All data are captured continuously by using a data logger. Normally when it is not raining, data are monitored at 1 s intervals and the statistics of the data (mean, standard deviations, maximum, minimum and their time of occurrence) are recorded at 1 h intervals. When it is raining, data statistics are recorded at 1 min intervals. In the event of strong gusts (instantaneous wind speed more than 10 m/s), data are monitored at 0.25 s intervals and data statistics are
recorded at 30 s intervals.